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openshift-docs/modules/microshift-4-21-known-issues.adoc
2025-10-22 07:50:37 -04:00

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// Module included in the following assemblies:
//
//microshift_release_notes/microshift-4-21-release-notes.adoc
:_mod-docs-content-type: CONCEPT
[id="microshift-4-21-known-issues_{context}"]
= Known issues
[role="_abstract"]
Understand the known issues that impact your {microshift-short} development and deployments.
* The maximum transmission unit (MTU) value in {microshift-short} OVN-K overlay networking must be 100 bytes smaller than the MTU value of the base network. {microshift-short} automatically configures the value using the MTU value of the default gateway of the host. If the auto-configuration does not work correctly, you must configure the the MTU value manually. For more information, see xref:../microshift_networking/microshift-cni.adoc#microshift-network-topology_microshift-about-ovn-k-plugin[Network topology].
//check link; KI is relatively evergreen